Add 30/81 and 72/56
1st number: 30/81, 2nd number: 1 16/56
30/81 + 72/56 is 313/189.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 56 is 4536
Next, find the equivalent fraction of both fractional numbers with denominator 4536 - For the 1st fraction, since 81 × 56 = 4536,
30/81 = 30 × 56/81 × 56 = 1680/4536 - Likewise, for the 2nd fraction, since 56 × 81 = 4536,
72/56 = 72 × 81/56 × 81 = 5832/4536 - Add the two like fractions:
1680/4536 + 5832/4536 = 1680 + 5832/4536 = 7512/4536 - 7512/4536 simplified gives 313/189
- So, 30/81 + 72/56 = 313/189
In mixed form: 1124/189
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/81+72/56 90/81+72/56